we heard a very long discussion about tax treatment of same-sex marriages. the cdu trying to show itself as a party that is delectable by urban voters and that stands for diversity, as i said. >> ending the eurozone crisis has been a top priority, not only for merkel, but also for other european leaders as well. >> one key part of the plans is the creation of a banking union. finance ministers were supposed to be discussing the first steps to building such a union today, but the talks collapsed without progress. the discussions are very contentious, mainly because of the devolution of national powers to brussels. our correspondent has been following the talks and explained why they collapsed. >> another meeting on this next question, another failure. basically, the differences between member states were not healed. on the one side, you've got germany being very questioning about the central core idea, which is that the european central bank will become the supervisory body for the whole euro banking area, insuring heavy capitalization of banks to bolster the